/Engine/Source/Runtime/Engine/Public/WorldPartition/WorldPartitionStreamingSource.h
Creates and initializes a spherical sector using given parameters.
FSphericalSector ( FVector InCenter, [FReal](API\Runtime\Engine\WorldPartition\FSphericalSector\FReal) InRadius, FVector InAxis, [FReal](API\Runtime\Engine\WorldPartition\FSphericalSector\FReal) InAngle )